Making tables accessible with Dreamweaver
Make the most of Dreamweaver's insert table dialog box options.
Notice that the Table size presentation options are going to be in the CSS, not HTML presentation attributes.
If I select the Header option for the top of each column, Dreamweaver automatically includes scope="col" in the th elements, an accessibility feature that identifies the content of each cell as being related to the th for users of assistive devices.
Demo: Create the table in Dreamweaver
Keep in mind when doing the table yourself, the presentation elements are in the CSS.